Portable electric radiator



Oct. 26 1926.

Filed June 1, 1926 4 Sheets-Sheet 1 .Illlllllllllll'llll llllnllll. I

1N VENTOR A TTORNEY PORTABLE ELECTRIC RADIATOR Filed June 1, 1926 vSheets-Sheet 2 W INIf ENTOR %%%J A TTORNEY Oct. 26, 1926 A. JOHNSON rPORTABLE ELECTRIC RADIATOR Filed June 1, 1926 4 Sheets-Sheet 5 ki nIiITITIITI;

W m V. VTOR B y W A 570mm Y PORTABLE ELECTRIC RADIATOR Filed June 1,1926 4 Sheets-Sht 4 Fig-44.

11v VEN TOR 'A TTOkNE Y Patented Oct. 26, 1926 AXEL JOHNS ON, 0FOAKLAND, CALIFORNIA.

PORTABLE ELECTRIC RADIATOR.

Application filed June 1,

This invention relates to electric heaters and more particularly toheaters of the portable type resembling the conventional radiator, andto a heater wherein reflection and air circulation are employed toobtain maximum efficiency in the apparatus.

Among the objects of the inrentio is the construction of a heater fromunit sections, which may be varied in number depending on the size ofthe heater to be manufactured, and to form thesestructural units in suchmanner that they may be assembled with the minimum of labor, andmanufactured at a minimum cost. To construct a heater of the multipleduplicate unit type wherein the units are of simple, cheap and effectivefor mation, and when assembled provide an ellicient electric heater ofrich appearance, which may be moved about the place to be heated, andthe current for supplying'the heating elements thereof may be obtainedfrom fixed sockets to which is connected a flexible conductor.

With the above mentioned and r jects in view, the invent-ion consists inthe novel construction and combination of parts hereinafter described,illustrated in the ac companying drawings and pointed out in the claimshereto appended; it bei g understood that various changes in the form,proportion, size and minor details of construction within the scope ofthe claims be resorted to without. departing from the spirit orsacrificing any of the advantages of the invention.

To more fully comprehend the invention, reference is directed to theaccompanying drawings forming a part of the application and wherein-Fig. 1 is a view in elevation of the preferred embodiment of myinvention, as viewed from the rear of the'heater, with a portion of therear wall broken away exposing the interior of the heater structure.

Fig. 2 is a view in broken top plan.

Fig. 3 is a view in vertical section.

Fig. 4 is a view in end elevation.

Referring more particularly to the set views of the drawings, wherein lacters of reference designate corr pondi parts1 indicates a pair ofradiator end plates provided with supporting legs 2, and preferablyformed of cast material. The end plates 1 are united at their top tierods 3 and adjacent their bottom by a bottom plate, 41- the latter beingsecured to the end plates by attaching devices passing through 1926.Serial No. 112,836.

lugs l extending inwardly from the inner faces of said plates.Betweenthe end plates are held the heater front and rear walls 5 and 6,the same being preferably constructed of sheet material and providedwith vertically disposed flutes 7. ,Both front and rear walls 5 and 6are constructed of a plurality, of vertically disposed units: 8, {thesame being formed on their vertical edges with flanges 9, which abut onof the units.

The flanges are formed with apertures near their upper ends, throughwhich extend the tierods 3, and between opposing flanges of therespective unitsthere is interposed a tubular spacing member 10 throughwhich the tie rods pass. The lower ends ofthe units forming therespective walls are held together by other tie rods 11, also extendingthrough apertures in the flanges of the units. and between the flangesof the respective units are interposed tubular spacers 12 surroundingthe rods 11.

The lower edges of the front and rear walls 5 and 6 extend to a pointopposite the longitudinal side edges of the bottom plate 4, and theirupper ends terminate substantially flush with the upper ends of therespective end plates 13, which in turn extend above and are united tothe innerfaces of the end walls 1. The front wall. 5 is provided with avertical series of perforations 1 to admit of the reflection of theglowof the heating element, hereinafter described, and the passage ofheated air from the interior of the heater therethrough.

Resting on the upper ends of the front and rear walls 5 and 6 and theend plates 13 is a top wall 15 preferably of grill forma-= each formedon its transverse edge with a depending flange 16, the flanges ofadjacent sections when assembled abutting, as in Fig. 1, and forinedwith apertures 17 through which extend the tie rods 3. The end see tionsof the cover plate 15 are illustrated as being provided with handles 18,but this is understood to be optional.

Arranged in parallel spaced relation to the inner face of the rear wall6 and adjacent thereto is a reflector wall 19, the upper portion ofwhich curves forwardly at 20 toward the upper end of the front wall 5and lies beneath the undersurface of the top plate 15. This forwardcurved extension of the reflector 19 is secured by suitable means theassembling to depending lugs 21, preferably integral with the sectionsof the top wall 15.

The space between the rear wall 6 and reflector wall 19, indicated bythe numeral 22, forms an air circulating passage 1 at the rear of theheat-er, the upper end of which terminates beneath the top wall 15.

Disposed in vertical parallel spaced relation within the heater aresuitable supporting cores 23 having wound therearound resistanceelements 2 1, the elements and their respective cores constitutingheating units which are interconnected by buss bars 25.

Disposed transversely across the upper and lower ends of the respectiveunits are mounting bars 25, the endsof which cooperate with the flanges26 extending inwardly from the end plates 1, and said bars are securedat their corresponding ends to the respective flanges by tie bolts 27extending therethrough.

It will thus be apparent that the elements 'may be removed from theheater as a unit.

Current is supplied to the elements through leads 28 which are adaptedfor connection with the main supply leads 29 through a switch 30 mountedon one of the end plates, the lead 29 passing through an insulatedaperture 31 within said end wall, as illustrated in Fig. 1.

hen in use, the glow of the resistance elements 24 will be reflected bythe plate l9 through the ports 14: in the front wall;

the air entering the lower part of the heating chamber within which theunits are mounted will be caused to rise cnerein, be-

- comeheatedby Contact with the units and pass from the chamber throughthe apertures 14. The air entering the lower portion of the passage 22will be heated by condiiction and rise from the heater through the grilltop -wall 15. The provision of the air circulating passage 22 insuresthat the rear wall of the heater will be maintained cooled at all times.

I claim 1. A portable electric radiator comprising end, back and portedfront and top walls forming a chamber having an open front, top andbottom, a pair of tie rods uniting the upper ends of the end walls, onerod of the pair uniting the back wall with one edge of the top wall andthe other rod of the pair uniting the front wall with the other edge ofthe top wall, a reflector wall disposed vertically within the chamberdividing the same longitudinally into a heating unit compartment and anair passage, said wall overlying the heating unit compartment beneaththe top wall, and electric heating elements within the heating chamber.

2. A portable electric radiator comprising end, back and ported frontand top wall members, forming a chamber having an open front, top andbottom, the respective walls each being formed of a plurality ofsubstantially duplicate units, a reflector wall vertically disposedwithin the chamber and dividing the same longitudinally into a heatingunit compartment in rear of the front wall and an air passage betweenthe re liector wall and the back wall, the upper end of said reflectorwall overlying the heating unit compartment beneath the top wall, a pairof tie rods uniting the end walls and one of the rods of the pairuniting the back wall forming sections with the top wall forming sectons, and the other rod of the p. 'r uniting the front wall formingsections with the top wall forming sections, and heating elements withinthe heating unit compartment.

3. A portable electric radiator comprising end, front, back and top wallmembers, the respective walls each being formed of a plurality ofsubstantially duplicate units and providing a heating chamber, the frontand top walls being further provided with apertures, a reflector wallwithin the chamber and formed of a plurality of substantially duplicateunits, said reflector facing the ported front wall and forming with theback wall a vertically disposed air passage extending the full length ofthe chamber from top to bottom, a plurality of electric heating elementsdisposed within the chamber in advance of the reflector, and tie rodsuniting the upper ends of the end walls with the top wall, one of saidrods each passing through the respective front and back walls.

In testimony whereof I have signed my name to this specification.

AXEL JOHNSON.

